Asterisk PJSIP Channel Driver DoS (AST-2014-009)

medium Nessus Plugin ID 77858

Language:

Synopsis

A telephony application running on the remote host is affected by a denial of service vulnerability.

Description

According to the version in its SIP banner, the version of Asterisk running on the remote host is potentially affected by a denial of service vulnerability in the PJSIP channel driver. This is due to a flaw in the 'res_pjsip_pubsub' module. The issue is triggered when handling a SIP SUBSCRIBE request with unexpected mixes of headers for a given event package. By using a specially crafted request, a remote attacker could exploit this to crash the application.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Upgrade to Asterisk 12.5.1 or apply the appropriate patch listed in the Asterisk advisory.

Plugin Details

Severity: Medium

ID: 77858

File Name: asterisk_ast_2014_009.nasl

Version: 1.11

Type: remote

Family: Misc.

Published: 9/25/2014

Updated: 4/11/2022

Configuration: Enable paranoid mode, Enable thorough checks

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 4

Temporal Score: 3

Vector: CVSS2#AV:N/AC:L/Au:S/C:N/I:N/A:P

CVSS Score Source: CVE-2014-6609

Vulnerability Information

CPE: cpe:/a:digium:asterisk

Required KB Items: Settings/ParanoidReport, asterisk/sip_detected

Exploit Ease: No known exploits are available

Patch Publication Date: 9/18/2014

Vulnerability Publication Date: 9/18/2014

Reference Information

CVE: CVE-2014-6609

BID: 69972

Detections

Analytics